Installing an aftermarket alarm in the Honda Accord is easier than most vehicles because of a prewired system in the fuse panel. Additional add-ons such as remote start, pager alert notification and GPS tracking systems are all available from alarm manufacturers. Installing an alarm in the Honda Accord requires knowledge of automotive electrical systems and basic tools.
Open the hood and disconnect the positive battery cable. Remove the fuse box cover under the dash on the driver's side and push the driver's seat all the way back.
Identify the white and black door lock trigger wires and attach the alarm's door lock relay. Find the white power wire and connect the alarm's power wire.
Find an open area in the engine bay of the Accord and mount the siren facing the engine to limit water exposure when driving. Pull the wire along the body or firewall to the driver's side. Feed the wire through the firewall using the existing hole.
Mount the shock sensor per the manufacturer's recommendation and run the wires to the driver's side of the dash. Locate the black and white start kill wire in the ignition harness and attach the start disable relay.
Secure the alarm control module as far into the dash as possible with zip ties and connect the power, door lock relay, siren and start disable wire to the control module. Reconnect the positive battery cable and test the alarm. Adjust the sensitivity as necessary and secure any loose wires.
